AS 2312.1:2014 Guide to the protection of structural steel against atmospheric corrosion by the use of protective coatings, Part 1: Paint coatings
Standards Australia
Supersedes: AS/NZS 2312:2002 Guide to the protection of structural steel against atmospheric corrosion by the use of protective coatings, Part 1: Paint coatings
Supersedes: AS/NZS 2312:2002 AMDT 1 Guide to the protection of structural steel against atmospheric corrosion by the use of protective coatings, Part 1: Paint coatings
Draft Designation: DR AS/NZS 2312.1Amended by: AS 2312.1:2014 Amd 1:2017 Guide to the protection of structural steel against atmospheric corrosion by the use of protective coatings, Part 1: Paint coatings
This Standard was prepared by the Joint Standards Australia/Standards New Zealand Committee MT-014, Corrosion of Metals, to supersede, in part, AS/NZS 2312:2002, Guide to the protection of structural steel against atmospheric corrosion by the use of protective coatings.
Amendment No. 1 to this Standard was prepared by the Australian members of the Joint Standards Australia/Standards New Zealand Committee MT-014, Corrosion of Metals. As a consequence of Amendment No. 1, which is published as an Australian-only amendment, the designation of this Standard has been changed from AS/NZS 2312.1:2014 to AS 2312.1:2014.
This Standard incorporates Amendment No. 1 (October 2017). The changes required by the Amendment are indicated in the text by a marginal bar and amendment number against the clause, note, table, figure or part thereof affected.
The objective of this Standard is to provide guidance for architects, engineers, builders, the surface coating industry and users of protective services in general, on paint coating systems for the protection of steel work against corrosion. The designer can choose from a selection of systems based on expected service life to first maintenance for various environments. The systems recommended herein are based on good industrial practice and usage; however, local knowledge of any corrosion problem should influence the decisions
taken. In providing recommendations on up-to-date protection systems, the Committee is aware of the large number of systems used commercially, but, to avoid confusion, has included only a limited range of systems for each type of environment.
It is necessary to refer to each Section of this Standard when a specification for an appropriate system is being prepared.
This Standard is part of a series for the protection of steel from corrosion as follows:
AS 2312.1 Guide to the protection of structural steel against atmospheric corrosion by the use of protective coatings, Part 1: Paint coatings (this Standard) AS/NZS 2312.2 Guide to the protection of structural steel against atmospheric corrosion by the use of protective coatings, Part 2: Hot dip galvanizing
The revision of AS/NZS 2312:2002 is in three Parts. This Standard is Part 1 and it covers paint coating systems only, that is, liquid-applied paints whose main purpose is corrosion mitigation. Section 5 in the 2002 edition, which covered metallic coatings, has been deleted, along with other specific references to metallic coatings. Section 7 in the 2002 Standard, which covered factors influencing coating selection, has been moved to Section 5. Section 8, which covered powder coatings and tapes, has been edited and moved to Appendix H. These coatings may be covered by an additional part to AS/NZS 2312 in the future. Section 13 in the 2002 edition, which covered health and safety, has been deleted, as the Committee felt this important topic is too complex to cover in this guide. This Standard has also updated recommended coating systems and deleted some rarely used systems.
In preparing this revision, cognizance was taken of the International Standards in the ISO 12944 series, Paints and varnishes—Corrosion protection of steel structures by protective paint systems. These Standards were not adopted as the Committee felt the present document is more appropriate to Australian and New Zealand industry conditions and is more user-friendly.
This Standard has been prepared as a guide only, to provide advice and recommendations for paint coating of steelwork. Clauses in this document are written using informative terminology and should not be interpreted otherwise. Coating requirements should be determined for the individual application. This Standard should be used in conjunction with the relevant surface preparation and inspection Standards.
The term ‘informative’ has been used in this Standard to define the application of the appendix to which it applies. An ‘informative’ appendix is only for information and guidance.
Originated in Australia as part of MA 1.5-1967. Originated in New Zealand as part of NZS/AS 2312:1984. Previous edition part of AS/NZS 2312:2002. Jointly revised in part and redesignated as AS/NZS 2312.1:2014. Reissued incorporating Amendment No. 1 (October 2017).Contents:
Section 1: Scope And General
Section 2: Classification Of Environments
Section 3: Planning, Design And Fabrication For Corrosion Protection
Section 4: Surface Preparation
Section 5: Factors Influencing Paint Coating Selection
Section 6: Paint Coating Systems For Corrosion Protection
Section 7: Painting And Paint Application Methods
Section 8: Maintenance Of Paint Coating Systems
Section 9: Inspection And Testing
Section 10: Preparation Of Coating Specifications
Appendix A: Guidance On The Use Of This Standard
Appendix B: Factors Influencing Corrosivity
Appendix C: Paint Coatings For Non-Atmospheric And Hot Environments
Appendix D: Description Of Paint Types
Appendix E: Economics Of Corrosion Protection
Appendix F: Volatile Organic Compounds (Vocs)
Appendix G: Typical Criteria For Selected Coating Specifications
Appendix H: Powder Coatings And Tape Wrappings
Corrosion of Metals.
MT-014
Australasian Corrosion Association; Australian Chamber of Commerce and Industry; Australian Electrolysis Committee; Australian Industry Group; Australian Paint Manufacturers' Federation; Australian Pipeline Industry Association; Austroads; Bureau of Steel Manufacturers of Australia; CSIRO Materials Science&Engineering; Galvanizers Association of Australia; Galvanizing Association of New Zealand; Materials Australia; New Zealand Heavy Engineering Research; SA Water; Water Services Association of Australia.